Vernon Schryver <v...@rhyolite.com> wrote: > > If you have a domain to which you can can add records for a subdomain > with differing 5-30 second TTLs and can spend not just 5 seconds but > a few minutes playing around, you might come to my conclusion. I think > they treat ANY as if it were psuedo-rdataset containing some of the > RRs for the domain with a TTL equal to the minimum of all of the TTLs > of the contained rdatasets. (I thought I sometimes get only some of > the record types for my Christmas tree test domain from 8.8.8.8, but > now I seem to always get all of them.)
I thought Google Public DNS re-fetched RRsets as they were expiring in order to keep the cache populated, which would explain what you see, but they don't mention it on https://developers.google.com/speed/public-dns/docs/performance > 5 years ago that might have been a good hack, I believe the ANY hack on mail servers was a Sendmailism 20ish years ago. It was a bad hack then and it has remained a bad hack :-) Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first. Rough, becoming slight or moderate. Showers, rain at first. Moderate or good, occasionally poor at first. _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
